Issue 51, 2019, Issue in Progress

Au-based bimetallic catalysts: how the synergy between two metals affects their catalytic activity

Abstract

Supported bimetallic nanoparticles are particularly attractive catalysts due to increased activity and stability compared to their monometallic counterparts. In this work, gold-based catalysts have been studied as catalysts for the selective base-free oxidation of glucose. TiO2-supported Au–Pd and Au–Cu series prepared by the sol-immobilization and precipitation-reduction methods, respectively, showed a significant synergistic effect, particularly when the theoretical weight ratio of the two metals was close to 1 : 1 (with an actual experimental bulk Au/Pd molar ratio of ca. 0.8 and ca. 0.4 for Au/Cu) in both cases. XPS analysis showed that the presence of Auδ+, Pd2+ and CuOH species played an important role in the base-free glucose oxidation.

Graphical abstract: Au-based bimetallic catalysts: how the synergy between two metals affects their catalytic activity

Supplementary files

Article information

Article type
Paper
Submitted
02 Aug 2019
Accepted
16 Sep 2019
First published
20 Sep 2019
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2019,9, 29888-29901

Au-based bimetallic catalysts: how the synergy between two metals affects their catalytic activity

J. Sha, S. Paul, F. Dumeignil and R. Wojcieszak, RSC Adv., 2019, 9, 29888 DOI: 10.1039/C9RA06001D

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